雅开气田为低孔、低渗，受构造-岩性控制的复合型砂岩气藏，具有气-水倒置、地层压力异常等特殊的地质特征。综合研究认为，该类气藏的气-水关系因受到构造、砂体尖灭以及储层物性变化的影响，形成了流体系统较为复杂的特殊类型气藏。分析认为该气藏存在2 种异常的气-水关系，通过研究这2 种气-水关系的形成原因及分布区域，认为在该气藏西北部区域存在有利的地层-岩性圈闭。在雅开气田西北部区域所部署的2 口井均获得了工业油气流，同时确定了该气田下一步滚动扩边的方向。

YakaiGasfield is a typical compound sandstone gas reservoir controlled by structure-lithology, and characterized by lowporosity and lowpermeability, gas/water inversion and abnormal formation pressure. Comprehensive study shows that the gas/water relation is influenced not only by structure, but also by sand body piching and physical property changing, so it is a relatively complex particular gas reservoir. There exist two types of abnormal gas/water relation in this gas reservoir, and the forming reason and distribution areas of these two types of gas/water relation are analyzed. It is considered that there developed favorable stratigraphic-lithologic traps in the northwestern area of the gas reservoir. Two wells deployed in the northwestern area have obtained commercial oil and gas flow, and the further rolling exploration
extension direction is pointed out.